Problem 10-7 Calculating Returns and Varlability [LO 1] Use the following returns for X and Y. Returns Year X 1 22.8% 29.4% -17.8 -4.8 10.8 31.4 -16.6 35.4 21.6 5.8 a. Calculate the average returns for X and Y. Note: Do not round Intermedlate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16. b. Calculate the variances for X and Y. Note: Do not round Intermediate calculations and round your answers to 6 decimal places, e.g., .161616. c. Calculate the standard deviations for X and Y. Note: Do not round Intermedlate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16. X Y a. Average return 8.64 % 14.96 % b. Variance 91.482100 c. Standard deviation % %